that many of these continental European countries take the idea of being a (theoretically, if not borne out at all in reality) "flat society", with supposed "full equality".

Well yeah, the idea of equality is just used to create inequality on a tremendous scale on other aspects.

Hence being extremely early adopters of gay marriage, and "trans rights" (Belgium seems exceptionally obsessed with the latter, for reasons I do not understand),

It is? Germany, UK and Ireland are the worst in my experience. Italy is the least bad, and Spain and France somewhere in between.

and, in many cases, adopting Soviet-block apartments for all, even at the cost of levelling their historic, "vernacular" architecture (looking at you, Sweden, Norway and Finland)...

That really has nothing to do with 'equality'. It means "we want to pretend like we did something for the people at minimum cost so that there's more for our corrupt cronies".

Which seems to be at least part of the reason they hate England (less so the other "Home Nations") so much - that idea, and everything that comes with it, just doesn't to jive with Brits, despite the efforts of Labour and the Guardianistas, lol.

Are you sure? I look at the UK as the worst of the worst. Even though Germany makes a big deal of prosecuting people for their speech, the sheer magnitude of government terror in the UK is far greater. Thousands are arrested for speech each year.

And not to make it personal, but continental Europe - or even the UK - did not have internment camps for people who came into contact with the virus.

If I had to sum up what the end result of the "flat society". model is, at least in the Nordics, I would say... Beige. Everything just ends up beige.

They do not actually believe in equality, as I think you understand. It's just a convenient excuse, here as elsewhere, for getting what they want.